Gaya APA
Teaching modern languages. (1974).
London:
David & Charles.
Gaya Chicago
Teaching modern languages.
.
London:
David & Charles,
1974.
Buku.
Gaya MLA
Teaching modern languages.
.
London:
David & Charles,
1974.
Buku.
Gaya Turabian
Teaching modern languages.
London:
David & Charles,
1974.
Buku.